Davina McCall has joked that she is growing old “disgracefully” while wearing a thong-style bikini for the first time, less than two weeks before her 50th birthday.

The TV presenter posted a picture of herself while on holiday in a red two-piece swimsuit, her bottom revealed due to the scant design of the briefs, writing alongside it that she was “pretty chuffed” with how it looks on her.

Sharing the picture on Instagram with her 687,000 followers, the keen fitness fan wrote: “Did a run this am… First foray into thong bikini … at 50.